Loom



J. LUCAS May 4 1926.

LOOM

Filed July 2, 1924 I I Jan na/v L (/6978 ATTORNEYS Patented May 4, 1926.

STATES PATENT O'FFicE,

Jo i'vari'ialv ucas, or savlasaa qedmm; rss aa i atjteatsarasaas 1566M CORPORATION: on NEW YORK, N. Y., A CORPORATION OF NEW YORK.

LooM;

Application filed July 2,

To all whom it may concern:

Be it known that I, JONATHAN LuoAs, a citizen of the United States, and resident of Savannah, county of. Chatham, State of Georgia, have invented certain new and usefulImprovements in Looms, or which the following is a specification.

My invention relates to looms and more particularly to the bobbins thereof and has for its object. to provide the bobbin with a simple and etlici'en't device arranged for a'utomatically assuming an operative position when the supply of yarn is fully exhausted to bring about a stoppage of the loom mechanism or a substitution of bobbins. The invention further contemplates a novel con, struction in which the device does not come into action until approximately theful'l supply of yarn upon the bobbin in question is utilized. Other more specific objects of the invention will appear from the description hereinafter and the features of novelty will be pointed out in t'heclaim.

In the accompanying drawings, which illustrate an example of the invention without defining itslimits, Fig. l is an exterior View partly in section of a bobbin with one. form of the invention applied thereto; Fig. 2' is an end View thereof; Fig. 3' is a sectional view on the line 3 3 of Fig. 1; Fig. 4 isja view similar to Fig. 1 showing the bobbin with a supply of yarn thereon'; Fig. ,5 is a cross section on the line 5 5,ot Fig. t Fig. 6 is a view showing the bobbin with the in vention applied thereto in operative combination with ashuttle and'lTig. 7 is a cross section on the'line 'Y- Z of Fig; 6.

The bobbin itself may be of any conventional and well known construction and as shown comprises a baselO tapering toward and comprising an axial continuation' o'f a stem 11, the outer surface of the base 10 being preferably stepped in the usualway. The stem 11 is provided with the customary axial bore which adapts it for operative combination withthe conventional winding or spinning machine and 'whichin the pres ent case communicates with a compound chamber located at the base end of the bobbin; the latter; is further constructed in a manner to enable to be detachably mounted in the customary shuttle as will be more fully pointed out hereinafter. The afore' said compound chamber comprises a rela- 1924. seran No. 723,634.

nates, at. .the' .baseiiendof the. bobbin. The:

meanswhereby the. stopping. of the; loom mechanism or the substitution ofafilled bob.- bin for an empty 011e,.aut'omatically takes place when the supply ofyarn upon a given bobbin. has been exhausted, comprises trip ping member 15 which, projects through,.;a. recess 16 of the bobbin an-djis yielcli ngly mounted in the compo'undchamben 13, 1.4L; in the illustrated example .the.,tripping member 15 comprises an integralportion of, a preferably V-shaped spring l? bent into proper shape; The apex. end 18 of the spring 17.,is oifset with respect to the major portion thereof and is located in the cham; ber section 13 to one side of the bore 12 so as not to interfere with thefpositioniiig of the bobbin upon the windingor spinning m chine or in the customary shuttle. The spring 1 isjremovably mountedinthe com: pound chamber 1 3,1 14, in any convenient manner as, for instance, by being. formed i h. pr t o .9, at e o adapted to be inserted into an aperture 20 of thebobbin base 1.0,.as shownin Fig l. 1 th P efe r d; str c on} he r projects outwardly beyond the bobbin base .1 the fo m of. afin p es .2 h r by the position. ofthe tripping member 15 may be manually controlled. with such an, arrange nent, suitable provision is made upon the windingor spinning machine and upon theshuttle, in the form ot suitabl ylocated apertures or recesses, to accommodate the projecting fingcr piece 21.... The bobbin .is wound witha supply of yarn 2 2 in the usual manner asindicated in 4, the convolutions of theyarn being wound .oyer the re.- cess 16 and serving to maintain the pingmember 15in an inoperative position in saidrecessin which all parts of the device are within the surface confinesof thebob bin-.1 It will bejunderstood that the spring 1 withthe tripping meinber lomay be in; serted into the compound c'hamber 13, 14, after thebobbin has been fully wound with yarnor said spring may be; in place in said compound chamber with the member 15 in its inoperative position during such winding. p v 1 \Vhen combined with the shuttle, the bobbin is held therein in the customary manner, dependent upon the character of the loom of which the shuttle forms a part. In the illustrated example the shuttle is of the type which is intended for cooperation with a loom including a magazine of bobbins arranged to successively replace empty bobbins as the latter are successively forced from the shuttle at the proper time. In such case the bobbin may be remo-vably held in place by means of resilient clamping members 23, so as to extend lengthwise of the shuttle 24: in the customary opening 25 thereof; the latter extends transversely through the shuttle 24c and is of such charactor as to permit a bobbin to be automatically pushed from the shuttle when its supply of yarn has been exhausted and to permit a new bobbin to be substituted. To prevent the bobbin from rotating relatively to the shuttle, for the purpose to be more clearly described hereinafter, the bobbin base 10 is squared at its end and is provided with transverse grooves 26 in which the clamping members 23 are located.

It has been the general practice to provide shuttles with openings in the side walls thereof, into and out of which a stop motion lever or pusher is adapted to be reciprocated so as to periodically contact with the supply of yarn upon the base 10 of the bobbin. As the supply of yarn gradually decreases, the inward movement of the aforesaid lever finally becomes great enough to bring about the stoppage of the loom or to actuate a magazine mechanism whereby a more or less empty bobbin is removed from the shuttle and a new bobbin is substituted therefor. The constant tapping of the end of the stop motion lever against the yarn tends to injure the latter and consequently ofttimes causes breakage thereof at critical points in the weaving and in many cases produces bad spots in the woven matter; in addition, the actuation of the mechanism controlled by the stop motion lever is intermittently brought about and ofttimes takes place when a considerable supply of yarn still remains unused upon the bobbin. As a result of this, material waste of yarn ofttiines occurs. In the present case, these disadvantages and objections are entirely overcome. The stop motion lever 27 is arranged to be recipro cated into and out of a recess 28 formed at the proper points in the shuttle, the reciprocating movements of said lever 27 carrying it over and above the supply of yarn upon the base 10 is registry with the tripping member 15; as long as any yarn remains upon the bobbin, the tripping member will be held within the recess 16 in an inoperative position out of the path of the lever 27, which as a result will have no mechanical effect; neither will it contact with any part of the bobbin itself. When the supply of yarn reaches its last few convolutions upon the base 10, its resistance will be insuiiicient to maintain the member 15 in the recess 16 against the resiliency of the spring 17 at tl is stage, therefore, the member 15 will be automatically projected through the recess 16 to an operative tripping position beyond the surface of the bobbin base as shown in Figs. 1 and 2. in this condition of the parts, the member 15 lies in the path of the lever 27, which accordingly comes into contact therewith and thereby either causes a stoppage of the loom mechanism or brings about an operation of the magazine mechanism whereby the empty bobbin is removed from the shuttle and a new one is substituted therefor. The arrangement being such that the tripping member 15 is located at the base oi the winding from which the final convolutions are taken, it follows that the supply of yarn will be practically used up entirely before the tripping member 15 is automatically shifted or projected beyond the surface confines of the bobbin to an operative tripping position. The device in no way inter Yeres with the ordinary use of the bobbin and requires no material changes in any of the mechanisms with which it is adapted to cooperate and provides a positive and efficient means whereby the removal of an empty bobbin and the substitution of a filled bobbin therefor may be efficiently carried out. The spring 17 with the tripping member 15, may be easily removed from the compound chamber 13 and 14 or disconnected from the bobbin by simply inserting a suitable implement into the aperture 20 in a direction to force the projection inwardly therefrom.

The spring 17 is so arranged and constructed that it will not interfere with the placing of the bobbin upon the winding machine for purposes of rewinding the same with yarn. By exerting an inward pressure upon the member 15 the finger piece 21 will be shifted to a position in which it registers with the aforesaid recess or aperture with which the winding machine may be provided. in this way the member 15 is automatically held in an inoperatve position during the time that the bobbin is located upon the spindle of the winding machine.

Various changes in the specific forms shown and described may be made within the scope of the claim without departing from the spirit of my invention.

I claim:

The combination of a bobbin of the kind described provided with an axial bore and an open chamber at its one end forming a cz ntinuation of said bore, said bobbin further having a transverse. recess in registry with the longitudinal median line of said bobbin and communicating with said chambe and a i -shaped spring removably fitted in said chamber and having its apex end losated contiguous to and out of registry With said bore, said spring being shaped at an intermediate point of one of its members to provide tripping member normally held in said recess in an inoperative position by the yarn upon said bobbin and being projected out of said recess by the inherent elasticity of said spring to an operative tripping position, hen the supply of yarn on the bobbin is exhausted.

In testimony whereof I have hereunto set my hand.

JONATHAN LUCAS. 

